Analysis of Natural Disaster Risk based on Flood, Wind and Snow Risk

다국어 초록 (Multilingual Abstract)

This study developed flood, wind and snow risk map, after which an integrated natural disaster risk map of Daegu, Ulsan, Gyeongbook and Gangwon was generated. A 100-year flood inundation map was used for developing flood risk map and the results show 670 km 2 (1.8%) of the whole 36,860 km 2 study area was flooded. While for a 100-year wind velocity frequency mapping, results showed a range of 19.3 m/s to 59.9 m/s. For 100-year snow load frequency, the results ranged from 0.31 kN/m 2 to 7.53 kN/m 2 . Four levels of risk were used to identify the flood risk namely: Safe, Warning, Dangerous and Severely Dangerous. These levels represents the degree of damage caused by flood to buildings and people lives. The same levels of risk were adopted for the determination of wind and snow risk. Integrated natural disaster risk map was developed by applying weights calculated from flood, wind and snow damage according to administrative districts to each risk map.

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